Ba2 Cu3 O7 Y Capponi J, Chaillout C, Hewat A, Lejay P, Marezio M, Nguyen N, Raveau B, Soubeyroux J, Tholence J, Tournier R Europhysics Letters 3 (1987) 1301-1307 Structure of the 100 K Superconductor Ba2 Y Cu3 O7 between (5-300)K by Neutron Powder Diffraction _cod_database_code 1001453 _database_code_amcsd 0012634 3.8124 3.8807 11.6303 90 90 90 Pmmm atom x y z Ba1 .5 .5 .1830 Y1 .5 .5 .5 Cu1 0 0 0 Cu2 0 0 .3543 O1 0 0 .1592 O2 .5 0 .3764 O3 0 .5 .3773 O4 0 .5 0